Electrical annunciator



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P. POR'ATH.

ELECTRICAL ANNUNGIATOR. No. 555,120. Patented Feb` 25, 1896.

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ELECTRICAL ANNUNGIATOR.

510.555,120. Patented Feb. 25, 1896.

HONEY( B GRAHAM. PHOTO-WUWASHINSTUN. D C

UNiTnD STATES PATENT @Finca FRANK POR-ATH, OF APPLETON, VISCONSIN.

ELECTRICAL ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 555,120, dated February 25, 1896.

Application filed July 6, 1895.

T 0 all whom, it may concern.'

Be it known that I, FRANK PORATH, a cili- Zen of the United States, residing at Appleton, in the county of Outagamie and State of IVisconsin, have invented certain new and useful Improvements in Electrical Annunciators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art'to which it appertains to make and use the same.

My invention relates to electrical annunciators.

The object ot the invention is to provide an annunciator by means of which an alarm will be sounded when the water in a boiler rises above or falls below a certain level, thereby giving notice to the engineer in time to avert trouble.

With this object in view the invention consists of certain features of construction and combination of parts, which will be hereinafter fully described and claimed.

In the drawings, Figure 1 is a longitudinal vertical sectional view of a portion of a steamboiler showing my improved electrical annunciator applied thereto. Fig. 2 is a detail view of a portion of the boiler-head, portions of the rods 11 and 13, and their connections. Fig. 3 is a detail view of a portion of the boiler-head, the rod 15', its outer end 1S, the post 22, its contact-pins, the bindingpost, and connections 24 and 26. Fig. 4 is a view of a section of the rod 13 provided with the circular head 14. Fig. 5 is a view of a broken-oit portion of the rod 11, showing the slot 11 near its inner end. Fig. 6 is a detail view showing a portion of the boiler-head, the flanged post 29 secured to the boiler front, and the lever 30 connecting the rods 15 and 31.

In the accompanying drawings, 1 denotes a steam-boiler, shown in the present instanceas a stationary boiler.

2 denotes a disk having an exteriorlyscrewthreaded boss 3 at one end, which projects through a hole 4 in the end of the boiler and receives a ilanged nut 5, provided with a screwthreaded socket corresponding with the boss 3. The inner side of the disk 2 has projecting from it a split sleeve 7, having two dependerial No. 555,095. (No model.)

ing ears 8, while the other end of the iianged nut is screw-threaded', as shown at 9, to receive a stuffing-nut 10.

11 denotes a rod, the inner end of which projects through the split sleeve and is provided with a slot 11,while the outer end projects through the stufling-nut.

A float 12 is provided with a lever 13, the free end of which is bent upward and made in the form of a circular head 14. This lever is pivoted bya bolt 15 between the ears of the split sleeve, and its head 14 projects upward into the slot 11 in the rod 11. It will thus be seen that when the water in the boiler lowers the rod 11 will be drawn inward and when the water rises above its normal level the rod will be moved outward.

To notify the engineer or fireman of the rising or lowering of the water is the prime object of this invention, and to do this I provide means by which the movement of the rod 11 will be employed to close an electric circuit to sound an alarm. To this end a rod 15 is secured to the outer end of the rod 11 and projects through the front 16 of the boiler and an insulated plate 17 secured thereto. The outer end, 18, of the rod 15 is formed of some insulating material and is provided with three contact-pins 19 carried by a collar 20, secured to the end 18 by set-screws 20. These are connected by a wire 21. A post 22 is secured to the plate and is provided with contact-pins 23, which are secured to the post in the same manner as the pins are secured to the rod. Tires 24 lead from the pins 23 to binding-post 25, and wires 26 lead from these posts to an alarm 27, which, for convenience of illustration, is shown supported on a shelf 28 secured to the end of the boiler. The alarm may be, however, located at any point in the boiler room or building without departing from the spirit of my invention.

In operation, when the water in the boiler lowers a certain distance the rods 11 and 15 will have been drawn in sufficiently to cause two of the pins 19 (the outer and middle ones) to contact with the pins 2.3,thus completing the circuit and causing the alarm 27 to be sounded. IVhen the water is at its proper level the pins 23 will be out of contact with the pins 19, and

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should the water rise too high in the boiler the pins will be brought into contact, (the inner and middle ones 19 with the pins 23,) completing the circuit and sounding the alarm.

lVhere a door is used at the front of the 'furnace and extends upward to the top of the boiler it will be impossible to use the straight rod 15, as the same would have to project through the door. To overcome this objection I secure a 'hanged post 29 to the boiler front, as shown in Fig. 4, and secure the insulating-plate 17 to the front ot a boiler above the door which projects above the top et' the boiler. A lever 30 is pivoted to the post 20 and is connected to the outer end of the rod ll, while a'rod 3l is connected to the other end of the lever 32 and projects through the front of the furnace and is provided with contact-pins (not shown) to complete the circuit. rlhe movement of the rod ll will rock the lever, which will move the rod 3l inward or outward, as the case may be, to complete the circuit and sound the alarm.

Ilaving thus described my invention, what I claim, and desire to secure by Letters Patent, is*

The combination with a steam-boiler, of a disk secured to the end thereof and provided with a screw-threaded boss, and with a split sleeve having depending ears, a flanged nut having a screw-threaded socket to receive the boss, and provided with a screw-threaded tubular extension, a stuffing-nut secured on said extension, a rod having a slot at one end, a tloat pivoted between said ears and provided with an upturned end to engage said slot, an electric alarm and a connection between said alarm and the sliding rod, whereby when said float rises or falls, the electric circuit Will be completed and the alarm sounded, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FRAN K ll( )RAT I I. Vitnesses B. T. GILMORE, WM. A. CLARK. 

